JPH026108A - Mold and its manufacture - Google Patents
Mold and its manufactureInfo
- Publication number
- JPH026108A JPH026108A JP15641288A JP15641288A JPH026108A JP H026108 A JPH026108 A JP H026108A JP 15641288 A JP15641288 A JP 15641288A JP 15641288 A JP15641288 A JP 15641288A JP H026108 A JPH026108 A JP H026108A
- Authority
- JP
- Japan
- Prior art keywords
- mold
- inserter
- ceramic plate
- movable mold
- hardness
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 10
- 229910045601 alloy Inorganic materials 0.000 claims abstract description 25
- 239000000956 alloy Substances 0.000 claims abstract description 25
- 238000000034 method Methods 0.000 claims abstract description 15
- 238000010438 heat treatment Methods 0.000 claims abstract description 7
- 239000000919 ceramic Substances 0.000 abstract description 41
- 239000000463 material Substances 0.000 abstract description 8
- 239000013078 crystal Substances 0.000 abstract description 4
- 238000005242 forging Methods 0.000 abstract description 2
- 238000005299 abrasion Methods 0.000 abstract 1
- 239000011347 resin Substances 0.000 description 8
- 229920005989 resin Polymers 0.000 description 8
- 238000002347 injection Methods 0.000 description 6
- 239000007924 injection Substances 0.000 description 6
- 238000000465 moulding Methods 0.000 description 6
- 229910052751 metal Inorganic materials 0.000 description 5
- 239000002184 metal Substances 0.000 description 5
- 229910000990 Ni alloy Inorganic materials 0.000 description 4
- 238000005304 joining Methods 0.000 description 4
- 230000035882 stress Effects 0.000 description 4
- 239000006061 abrasive grain Substances 0.000 description 3
- 238000001816 cooling Methods 0.000 description 3
- 238000003825 pressing Methods 0.000 description 3
- VYZAMTAEIAYCRO-UHFFFAOYSA-N Chromium Chemical compound [Cr] VYZAMTAEIAYCRO-UHFFFAOYSA-N 0.000 description 2
- NRTOMJZYCJJWKI-UHFFFAOYSA-N Titanium nitride Chemical compound [Ti]#N NRTOMJZYCJJWKI-UHFFFAOYSA-N 0.000 description 2
- 238000007796 conventional method Methods 0.000 description 2
- 239000000498 cooling water Substances 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000002844 melting Methods 0.000 description 2
- 230000008018 melting Effects 0.000 description 2
- 150000002739 metals Chemical class 0.000 description 2
- 238000007747 plating Methods 0.000 description 2
- 238000005219 brazing Methods 0.000 description 1
- 230000008602 contraction Effects 0.000 description 1
- 239000002826 coolant Substances 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000002950 deficient Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000001746 injection moulding Methods 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 239000012466 permeate Substances 0.000 description 1
- 239000000047 product Substances 0.000 description 1
- 238000005507 spraying Methods 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 230000008646 thermal stress Effects 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
- B29C45/17—Component parts, details or accessories; Auxiliary operations
- B29C45/26—Moulds
- B29C45/263—Moulds with mould wall parts provided with fine grooves or impressions, e.g. for record discs
- B29C45/2632—Stampers; Mountings thereof
Landscapes
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Mechanical Engineering (AREA)
- Mounting, Exchange, And Manufacturing Of Dies (AREA)
- Moulds For Moulding Plastics Or The Like (AREA)
Abstract
Description
【発明の詳細な説明】
産業上の利用分野
本発明は金型及びその製造方法に係り、特に金型の表面
硬度を高めるよう構成した金型及びそのｗＡ造方法に関
する。DETAILED DESCRIPTION OF THE INVENTION Field of the Invention The present invention relates to a mold and a method for manufacturing the same, and more particularly to a mold configured to increase the surface hardness of the mold and a method for manufacturing the same.
従来の技術
例えばビデオディスクあるいはコンパクトディスク等の
樹脂成形品は、第７図に示す如く、射出成形用の金型内
に溶融樹脂が注入されることにより所定形状に成形され
る。金型は、第７図中、固定金型１（内面に複数の冷却
溝１ａを有する）と、固定金型１の内側端面に固定され
た鏡面ブロック２と、可動金型３（内面に複数の冷却溝
３８を有する）と、可動金型３の内側端面に固定された
プレート４と、鏡面ブロック２とプレート４との間に介
在するスタンパ−５と、スタンパ−５の外周に設けられ
鏡面ブロック２に固定されたストッパー６とよりなる。BACKGROUND ART Resin molded products such as video discs or compact discs are molded into a predetermined shape by injecting molten resin into an injection mold, as shown in FIG. The molds, as shown in FIG. ), a plate 4 fixed to the inner end surface of the movable mold 3, a stamper 5 interposed between the mirror block 2 and the plate 4, and a mirror surface provided on the outer periphery of the stamper 5. It consists of a stopper 6 fixed to the block 2.
スタンパ−５の表面には成形するディスクの記録面に対
応する凹凸形状のパターンが形成されており、スタンパ
−５は可動金型３、プレート４の中央孔３ｂ、４ｂを貫
通するビン７により支持されている。又、ストッパ６の
段部６ａはスタンパ−５の熱変形を考慮して、スタンパ
−５の周縁部より難問している。従って、ディスク成形
時においては、固定金型１の中央の挿入口１ｂに嵌入す
るスクリュー８より溶融樹脂が上記金型内、即ち鏡面ブ
ロック２、スタンパ−５、ストッパ６により画成された
キャビティ（空間）内に注入されてディスク１０が成形
される。An uneven pattern corresponding to the recording surface of the disk to be molded is formed on the surface of the stamper 5, and the stamper 5 is supported by a movable mold 3 and a bottle 7 passing through the center holes 3b and 4b of the plate 4. has been done. Further, the stepped portion 6a of the stopper 6 is more difficult than the peripheral portion of the stamper 5 in consideration of thermal deformation of the stamper 5. Therefore, during disk molding, the screw 8 inserted into the insertion opening 1b at the center of the fixed mold 1 allows the molten resin to flow into the mold, that is, into the cavity defined by the mirror block 2, the stamper 5, and the stopper 6 ( The disc 10 is formed by injecting the resin into the space (space).
その際、スタンパ−５は熱により伸縮する材質（例えば
ニッケル合金等）で形成されているため、溶融樹脂の注
入に伴い外周方向に伸びる。そして、冷却溝１ａ、３ａ
に冷却水が流れているので、スタンパ−５は注入後冷却
されると共に内周方向に縮む。At this time, since the stamper 5 is made of a material that expands and contracts with heat (for example, a nickel alloy), it expands in the outer circumferential direction as the molten resin is injected. And cooling grooves 1a, 3a
Since cooling water is flowing through the stamper 5, the stamper 5 is cooled after injection and contracts in the inner circumferential direction.
スタンパ−５が上記伸縮動作を繰り返すため、スタンパ
−５とプレート４との間に硬度の高い硬質異物が侵入す
ると、スタンパ−５の伸縮に伴いその都度可成りの圧力
下で摩擦が繰り返され、その結果プレート４及びスタン
パ−５が損傷してしまうといった不都合が生ずる。特に
、第８図に示す如く、スタンパ−５の裏面を研磨する砥
石より剥れた砥粒９がスタンパ−５に食い込んでいる場
合、溶融樹脂注入時スタンバ−５はプレート４に高硬度
の砥粒９が当接した状態のまま、矢印Ｘ方向に伸縮変位
することになる。これにより、プレート４の表面が砥粒
９の摺動により削られてしまうばかりか、スタンパ−５
自体が突状に変形してしまう。さらに、砥粒９によって
削られたプレート４の切粉がスタンパ−５の裏面に付着
して凸状のバンプ発生の原因になり、ディスク１０表面
に凹部ができてしまいディスク１０は成形不良となる。Since the stamper 5 repeats the above expansion and contraction operation, if a hard foreign object with high hardness enters between the stamper 5 and the plate 4, friction will be repeated under considerable pressure each time as the stamper 5 expands and contracts. As a result, the plate 4 and stamper 5 may be damaged. Particularly, as shown in FIG. 8, if the abrasive grains 9 that have come off from the grindstone that polishes the back surface of the stamper 5 are biting into the stamper 5, the stamper 5 is used as a high-hardness abrasive to the plate 4 when injecting the molten resin. The particles 9 are expanded and contracted in the direction of the arrow X while remaining in contact with each other. As a result, not only the surface of the plate 4 is scraped by the sliding of the abrasive grains 9, but also the stamper 5
The object itself is deformed into a protruding shape. Furthermore, the chips of the plate 4 ground by the abrasive grains 9 adhere to the back surface of the stamper 5, causing convex bumps, and recesses are formed on the surface of the disk 10, resulting in defective molding of the disk 10. .
そこで、金型の表面硬度を高めるべく、種々の方法が考
えられている。その方法としては、■耐摩耗性に優れた
高硬度を有する特殊金属（例えば超硬合金等）をそのま
ま使用して金型を製作する方法、■金型の表面に耐摩耗
性を有する金属としてのクロムをめっきしてＷ！賀被被
膜形成する方法、■窒化チタン等の硬質物質を付与して
金型を製作する方法、■セラミックスを金型の表面に溶
射して金型の表面硬度を高める方法、等がある。Therefore, various methods have been considered to increase the surface hardness of the mold. There are two ways to do this: ■ Making a mold using a special metal with high hardness and excellent wear resistance (such as cemented carbide); ■ Using a metal with wear resistance on the surface of the mold. Plated with chrome and W! There are two methods: 1) manufacturing a mold by applying a hard substance such as titanium nitride, and 2) increasing the surface hardness of the mold by thermally spraying ceramics onto the surface of the mold.
発明が解決しようとする課題
しかるに、上記従来の方法では、■の場合、金型自体を
表面硬度の高い材料で製作するため加工が難しく、２段
階加工が必要であり加工の手間が余計にかかるので加工
費が高価になる。又、上記■の場合、クロムめっきでは
必要な硬度が得られず、さらに強度を保持するためめっ
き厚を厚くすると加工費が高価になる。又、上記■の場
合、窒化チタンでは樹脂注入時の押圧強度を充分保持で
きない。又、上記■の場合、セラミックスを溶射しても
、セラミックス層の厚さが充分でなく、しかも面精度が
劣る。このように、従来の方法■〜■では夫々上記のよ
うな課題があり、金型の耐摩耗性を効果的に向上させる
ことが難しいといった課題がある。Problems to be Solved by the Invention However, in the case of (2), the conventional method described above is difficult to process because the mold itself is made of a material with high surface hardness, and two-step processing is required, which requires additional processing effort. Therefore, processing costs are high. Furthermore, in the case of (2) above, chrome plating does not provide the necessary hardness, and if the plating thickness is increased to maintain strength, processing costs will increase. Furthermore, in the case of (2) above, titanium nitride cannot sufficiently maintain the pressing strength during resin injection. Furthermore, in the case of (2) above, even if ceramics are sprayed, the thickness of the ceramic layer is not sufficient and the surface precision is poor. As described above, each of the conventional methods (1) to (2) has the above-mentioned problems, and it is difficult to effectively improve the wear resistance of the mold.
そこで、本発明は上記課題を解決した金型及びその製造
方法を提供することを目的とする。SUMMARY OF THE INVENTION Therefore, an object of the present invention is to provide a mold that solves the above problems and a method for manufacturing the same.
課題を解決するための手段及び作用
本発明は、金型本体を超塑性合金により形成し、超塑性
合金の超塑性現象により金型本体の表面に高硬度を有す
る高硬度部材を接合してなり、金型の表面硬度を高め耐
摩耗性を向上させるようにしたものである。Means and Effects for Solving the Problems The present invention comprises a mold body made of a superplastic alloy, and a high-hardness member having high hardness bonded to the surface of the mold body by the superplastic phenomenon of the superplastic alloy. , the surface hardness of the mold is increased to improve wear resistance.
実施例 第１図及び第２図に本発明の第１実施例を示す。Example A first embodiment of the present invention is shown in FIGS. 1 and 2. FIG.
尚、第１図中、前述の第７図と同一部分には同一符号を
付して、その説明は省略する。In FIG. 1, the same parts as those in FIG. 7 described above are designated by the same reference numerals, and the explanation thereof will be omitted.
両図中、可動金型１１は超塑性合金（本実施例ではステ
ンレス系の超塑性合金を使用する）を母材として製作さ
れている。ＩＴｒ動金型金型１１側裏面１１ａには複数
の冷却１１１ｂが設けられ、中心にはスタンパ−５のビ
ン７が挿通される中央孔１１Ｇが穿設されている。又、
可動金型１１は超塑性合金であるが、他の金属と同様加
ｒが容易である。尚、この超塑性合金は所定の温度に加
熱すると低い応力で超塑性を発生する材質として知られ
ており、超塑性としては微細結晶粒超塑性によるものを
使用する。In both figures, the movable mold 11 is manufactured using a superplastic alloy (in this embodiment, a stainless steel superplastic alloy is used) as a base material. A plurality of cooling units 111b are provided on the back side 11a of the ITr movable mold 11, and a central hole 11G into which the bottle 7 of the stamper 5 is inserted is bored in the center. or,
Although the movable mold 11 is made of a superplastic alloy, it can be easily worked like other metals. This superplastic alloy is known as a material that generates superplasticity with low stress when heated to a predetermined temperature, and the superplasticity used is one based on fine grain superplasticity.
本発明では後述するように上記の微細結晶粒超塑性現象
を利用するものであり、この微細結晶粒超塑性は超塑性
合金の融点く絶対温度）の１７２以上の高温で結晶粒を
１０〜１μ膳以下に微細化し、低応力を加えると発生す
る。又微細結晶粒超塑性で得られる超塑性合金の表面は
、微細結晶組織であるため極めて平滑な鏡面状態を加工
によって得られる。As will be described later, the present invention utilizes the above-mentioned fine grain superplasticity phenomenon, and this fine grain superplasticity is achieved by reducing grain size by 10 to 1 μm at a high temperature of 172 or above the melting point of the superplastic alloy (absolute temperature). It occurs when it is refined to a size smaller than that of a plate and low stress is applied. Furthermore, since the surface of the superplastic alloy obtained by fine grain superplasticity has a fine crystal structure, an extremely smooth mirror surface state can be obtained by processing.
上記可動金型１１の裏面１１ａには例えばニッケル合金
により形成された円盤状のインサータ１２（中央孔１２
ａを有する）を介して極めて高い硬度を有する円盤状の
セラミック板１３が接合されている。尚、セラミック板
１３は比較的厚く、中心には中央孔１３ａが設けられて
いる。The back surface 11a of the movable mold 11 is provided with a disk-shaped inserter 12 (central hole 12
A disk-shaped ceramic plate 13 having an extremely high hardness is joined via a ceramic plate 13 having a diameter of 1. Note that the ceramic plate 13 is relatively thick and has a central hole 13a in the center.
可動金型１１の裏面１１ａとインサータ１２とは、前述
した超塑性現象により原子接合されている。これにより
可動金型１１の冷却５ｌｌｂはインサータ１２によりそ
の開口部分を隙間なく塞がれることになり、冷却水の漏
れが防止される。又、インサータ１２とセラミック板１
３とはニッケル合金の原子がセラミック板１３の表面に
拡散し、接合される。このように、セラミック板１３は
所定の厚さを有するもののインサータ１２を介して可動
金型１１の表面に強固に接合される。The back surface 11a of the movable mold 11 and the inserter 12 are atomically bonded by the superplastic phenomenon described above. As a result, the opening of the coolant 5llb of the movable mold 11 is completely closed by the inserter 12, and leakage of cooling water is prevented. In addition, the inserter 12 and the ceramic plate 1
3, atoms of the nickel alloy diffuse into the surface of the ceramic plate 13 and are bonded. In this way, the ceramic plate 13 is firmly joined to the surface of the movable mold 11 via the inserter 12, although it has a predetermined thickness.
尚、インサータ１２には可動金型１１とセラミック板１
３とを接合する役目を有するとともに、熱処理時、可動
金型１１とセラミック板１３との熱膨張との差による熱
応力を吸収する役目も有している。Note that the inserter 12 includes a movable mold 11 and a ceramic plate 1.
It has the role of joining the movable mold 11 and the ceramic plate 13, and also has the role of absorbing thermal stress due to the difference in thermal expansion between the movable mold 11 and the ceramic plate 13 during heat treatment.
可動金型１１は上記のように接合されたセラミック板１
３によりその表面硬度及び耐熱強度が高められている。The movable mold 11 is a ceramic plate 1 joined as described above.
3 increases its surface hardness and heat resistance strength.
よって、硬質異物がスタンバ−５の裏面に食い込んでい
る状態で樹脂注入時スタンパ−５が熱により伸縮しても
、セラミック板１３の表面は損傷せず、可動金型１１の
表面は耐摩耗性が向上し、長期間の使用も可能となる。Therefore, even if the stamper 5 expands and contracts due to heat during resin injection with hard foreign matter biting into the back surface of the stamper 5, the surface of the ceramic plate 13 will not be damaged and the surface of the movable mold 11 will be wear-resistant. This improves performance and enables long-term use.
又、セラミック板１３は所定以上の厚さを有するため、
可動金型１１の表面強度が向上し、溶ｍ１ｉｉ１脂注入
時の応力が作用してもその表面に亀裂が生じない。In addition, since the ceramic plate 13 has a thickness greater than a predetermined value,
The surface strength of the movable mold 11 is improved, and cracks do not occur on the surface even when stress is applied during injection of the molten m1ii1 fat.
しかもセラミック板１３は表面にピンホールがなく、面
精度が高く、摩耗係数が低い。さらにはセラミック板１
３は耐食性も有している。Moreover, the ceramic plate 13 has no pinholes on its surface, has high surface precision, and has a low coefficient of wear. Furthermore, ceramic plate 1
3 also has corrosion resistance.
ここで、上記金型の製造方法、即ち上記可動金型１１に
セラミック板１３を接合する工程につき第３図（Ａ）〜
（Ｃ）を参照して説明する。Here, the method for manufacturing the mold, that is, the step of joining the ceramic plate 13 to the movable mold 11 will be explained in FIGS.
This will be explained with reference to (C).
まず、第３図（Ａ）に示す如く、超塑性合金により形成
された可動金型１１を用意する。尚１．可動金型１１の
方面１１ａには複数の冷却溝１１ｂが設けられ、中心に
は中央孔１１Ｇが穿設されている。First, as shown in FIG. 3(A), a movable mold 11 made of a superplastic alloy is prepared. Note 1. A plurality of cooling grooves 11b are provided on the side 11a of the movable mold 11, and a central hole 11G is bored in the center.
次に、第３図（Ｂ）に示す如く、可動金型１１の裏面１
１ａ上にインサータ１２を密着状態となるようｔ置し、
さらにインサータ１２上にセラミック板１３を載置する
。Next, as shown in FIG. 3(B), the back surface 1 of the movable mold 11 is
Place the inserter 12 on 1a so that it is in close contact with the inserter 12,
Furthermore, the ceramic plate 13 is placed on the inserter 12.
従って、可動金型１１は第３区（Ｃ）に示す如く、イン
サータ１２、セラミック板１３が面対向して載置された
状態で類１４内に挿入される。類１４内のａ度は超塑性
が発生しうる所定の温度、本実施例では約８００〜１１
００℃の＾温に保たれ、可動金型１１等は約１０〜４０
分間加熱される。尚、この温度は超塑性合金の融点の１
／２以上の温度である。Therefore, the movable mold 11 is inserted into the casing 14 with the inserter 12 and the ceramic plate 13 placed face to face, as shown in the third section (C). A degree in class 14 is a predetermined temperature at which superplasticity can occur, in this example, approximately 800 to 11
The temperature is kept at 00℃, and the movable mold 11 etc. is kept at a temperature of about 10~40℃.
Heat for minutes. In addition, this temperature is 1 of the melting point of the superplastic alloy.
/2 or more.
このような熱処理を施した後、例えば鍛造機を使用して
セラミック板１３を比較的低い荷重く本実施例では約１
０Ｋｙ／７（およそＩＭＰに等しい）の押圧力）で加圧
することにより、可動金型１１の裏面１１ａにおいては
前述した微細結晶粒超塑性現象が発生し、極めて平面度
の高い鏡面状態となる。さらに、インサータ１２及びセ
ラミック板１３が裏面１１ａに密着しているため、超塑
性により表面１１ａの結晶粒がインサータ１２表面の微
細な凹凸部分に食い込み、原子レベルの接合面積が拡大
し、可動金型１１とインサータ１２とは強固に接合され
る。After performing such heat treatment, the ceramic plate 13 is subjected to a relatively low load using, for example, a forging machine.
By applying pressure with a pressing force of 0 Ky/7 (approximately equal to IMP), the above-mentioned fine grain superplastic phenomenon occurs on the back surface 11a of the movable mold 11, resulting in a mirror-like state with extremely high flatness. Furthermore, since the inserter 12 and the ceramic plate 13 are in close contact with the back surface 11a, the crystal grains on the surface 11a bite into the fine irregularities on the surface of the inserter 12 due to superplasticity, expanding the bonding area at the atomic level, and molding the movable mold. 11 and inserter 12 are firmly joined.
即ち、インサータ１２の表面とセラミック板１３の表面
との間では、ニッケル合金の原子がセラミック板１３の
結晶内に透過して拡散する。従って、インサータ１２と
セラミック板１３との間においても、強固な接合が行な
われる。このように、可動金型１１の材質を超塑性合金
とすることにより、高硬度を有するセラミック板１３を
容易に接合することができる。That is, between the surface of the inserter 12 and the surface of the ceramic plate 13, atoms of the nickel alloy permeate into the crystal of the ceramic plate 13 and diffuse. Therefore, strong bonding is also achieved between the inserter 12 and the ceramic plate 13. In this way, by using the superplastic alloy as the material of the movable mold 11, the ceramic plates 13 having high hardness can be easily joined.
次に、第４図及び第５図に本発明の第２実施例を示す。Next, a second embodiment of the present invention is shown in FIGS. 4 and 5.
両図中、超塑性合金を母材として製作された可動金型１
１の裏面１１ａに、超塑性合金により円盤状に形成され
たプレート１５（中央孔１５ａを有する）が接合されて
いる。プレート１５には円盤状のインサータにッケル合
金製）１６を介して高硬度を有するセラミック板１７が
接合されている。即ち、セラミック板１７はプレート１
５、インサータ１６を介して可動金型１１の裏面１１ａ
に一体的に接合されている。ここで、上記金型の製造方
法につき第６図（Ａ）〜（Ｄ）を参照して説明する。In both figures, movable mold 1 manufactured using superplastic alloy as the base material.
A disk-shaped plate 15 (having a central hole 15a) made of superplastic alloy is bonded to the back surface 11a of 1. A ceramic plate 17 having high hardness is joined to the plate 15 via a disc-shaped inserter 16 (made of Keckel alloy). That is, the ceramic plate 17 is the plate 1
5. Back surface 11a of movable mold 11 via inserter 16
is integrally joined to. Here, the method for manufacturing the mold will be explained with reference to FIGS. 6(A) to 6(D).
まず、第６図（Ａ）中、可動金型１１上に超塑性合金製
のプレート１５を面対向させて載置する。First, as shown in FIG. 6(A), a superplastic alloy plate 15 is placed on the movable mold 11 so as to face each other.
この状態のまま、これらを類１４内に挿入し、約８００
〜１１００℃の温度に約１０〜４０分間加熱する。Insert them into class 14 in this state and make approximately 800
Heat to a temperature of ~1100°C for approximately 10-40 minutes.
可動金型１１とプレート１５とは超塑性合金同士であり
、加熱模炉１４より取り出しプレート１５を例えばＩ造
機で加圧することより、超塑性現象が生じ相互に原子結
合される。The movable mold 11 and the plate 15 are superplastic alloys, and when the plate 15 is taken out of the heating model furnace 14 and pressurized using, for example, an I-making machine, a superplastic phenomenon occurs and atomic bonding occurs with each other.
次に、第６図（Ｃ）に示す如く、可動金型１１に接合さ
れたプレート１５上にインサータ１６を面対向させて載
置し、さらにインサータ１６上にセラミック板１７を載
置する。そして、このように！Ｉ４重された状態のまま
、これらを第６図（Ｄ）に示す如く類１４内に挿入する
。Next, as shown in FIG. 6(C), the inserter 16 is placed on the plate 15 joined to the movable mold 11 so as to face each other, and the ceramic plate 17 is placed on the inserter 16. And like this! Insert these into the casing 14 as shown in FIG. 6(D) while still being stacked.
尚、類１４内は約１０〜４０分の間約４００〜７００℃
の温度に加熱される。その結果、ろう付けの原理により
プレート１５に密着するインサータ１６は原子結合され
る。さらに、インサータ１６とセラミック板１７との間
においても、ニッケル合金の原子がセラミック板１７内
に拡散して相互に結合される。In addition, for Class 14, the temperature is about 400 to 700℃ for about 10 to 40 minutes.
heated to a temperature of As a result, the inserter 16, which is in close contact with the plate 15, is atomically bonded by the principle of brazing. Furthermore, between the inserter 16 and the ceramic plate 17, atoms of the nickel alloy diffuse into the ceramic plate 17 and are bonded to each other.
かしくて、超塑性合金製の可動金型１１、プレート１５
を用いて、上記熱処理を施すことにより所定の厚さを有
するセラミック板１７は可動金型１１に一体的に結合さ
れる。A movable mold 11 and a plate 15 made of superplastic alloy.
The ceramic plate 17 having a predetermined thickness is integrally bonded to the movable mold 11 by performing the heat treatment using the above method.
尚、上記実施例では可動金型とセラミック板との間にイ
ンサータあるいは超塑性合金製のプレート等を介在させ
たが、このインサータ及びプレートは必らずしも必要な
ものではなく、無くても良い。又、上記各実施例は射出
成形用の可動金型を例に挙げて説明したが、これに限ら
ないのは勿論であり、例えば固定金型を超塑性合金によ
り形成してその表面にセラミック板を接合するようにし
ても良い。In the above embodiment, an inserter or a plate made of superplastic alloy was interposed between the movable mold and the ceramic plate, but the inserter and plate are not necessarily necessary and may be omitted. good. Furthermore, although each of the above embodiments has been explained using a movable mold for injection molding as an example, it is of course not limited to this. It is also possible to join them.
又、上記実施例ではディスクを成形する金型として説明
したが、本発明は他のものを成形する金型にも適用でき
、さらにはスタンバ−の無い金型にも適用できる。Further, although the above embodiment has been described as a mold for molding a disk, the present invention can also be applied to a mold for molding other things, and can even be applied to a mold without a stand bar.
又、上記実施例では高硬度部材としてセラミック板を用
いたが、これに限らず極めて硬度の高い金属板、例えば
超硬合金等を用いても良い。Further, in the above embodiment, a ceramic plate is used as the high-hardness member, but the present invention is not limited to this, and a metal plate with extremely high hardness, such as cemented carbide, may also be used.
発明の効果
上述の如り１１本発明になる金型及びその製造方法は、
表面硬度の高い高硬度部材を金型本体の表面に強固に接
合することができ、金型が硬質異物等により損傷したり
、あるいは成形工程の繰り返しによる摩耗が減少し、金
型の耐摩耗性を向上させて寿命をより延ばずことができ
る。さらに、簡単な熱処理加工を施すだけで超塑性現象
が起きるので、高硬度部材を容易に接合でき、しかも、
金型本体が超塑性合金を母材としているため、通常の金
属と同様に容易に加工することができ加工費を安価にで
きる。又高硬度部材の厚さを厚くしても接合強度が保持
されるため、厚みのある高硬度部材を金型本体に接合で
き、溶融樹脂注入時の応力が作用しても高硬度部材に亀
裂が生ずることもなく、金型全体の強度がより高められ
る等の特長を有する。Effects of the Invention As mentioned above, the mold and manufacturing method thereof according to the present invention are as follows:
High-hardness parts with high surface hardness can be firmly bonded to the surface of the mold body, reducing mold damage caused by hard foreign objects or wear due to repeated molding processes, and improving the wear resistance of the mold. It is possible to improve the lifespan without further extending the lifespan. Furthermore, since superplasticity occurs just by applying a simple heat treatment process, high hardness members can be easily joined.
Since the mold body is made of a superplastic alloy as a base material, it can be easily processed in the same way as normal metals, reducing processing costs. In addition, since the bonding strength is maintained even when the thickness of the high-hardness member is increased, it is possible to join a thick high-hardness member to the mold body, and even if stress is applied during injection of molten resin, the high-hardness member will not crack. It has the advantage that the strength of the entire mold can be further increased without causing any damage.
第１図及び第２図は本発明になる金型の第１実施例を説
明するための縦断面図、及びその要部拡大図、第３図は
可動金型にセラミック板を接合する工程を説明するため
の工程図、第４図及び第５図は本発明の第２実施例の縦
断面図及びその要部拡大図、第６図は第２実施例の可動
金型にセラミック板を接合する工程を説明するための工
程図、第７図及び第８図は従来の金型を説明するための
縦断面図及びその要部拡大図である。
１１・・・可動金型、１２．１６・・・インサータ、１
３．１７・・・セラミック板、１４・・・炉、１５・・
・プレート。
第
図
第
図
第
図
第
図
第
図
（Ｂ）
（Ｄ）Figures 1 and 2 are longitudinal cross-sectional views and enlarged views of essential parts for explaining the first embodiment of the mold according to the present invention, and Figure 3 shows the process of joining the ceramic plate to the movable mold. 4 and 5 are longitudinal cross-sectional views and enlarged views of essential parts of the second embodiment of the present invention, and FIG. 6 is a diagram showing the process of joining the movable mold of the second embodiment. FIGS. 7 and 8 are a longitudinal sectional view and an enlarged view of the main parts of a conventional mold. 11...Movable mold, 12.16...Inserter, 1
3.17...Ceramic plate, 14...Furnace, 15...
·plate. (B) (D)
Claims (2)
合金の超塑性現象により前記金型本体の表面に高硬度を
有する高硬度部材を接合してなることを特徴とする金型
。(1) A mold characterized in that the mold body is formed of a superplastic alloy, and a high-hardness member having high hardness is joined to the surface of the mold body due to the superplastic phenomenon of the superplastic alloy.
を有する高硬度部材とを互いに対向させ、前記金型本体
と高硬度部材とを対向状態のまま炉内に載置し、所定時
間加熱し加圧することにより超塑性を発生させ前記金型
本体と高硬度部材とを接合してなることを特徴とする金
型の製造方法。(2) A mold body formed of a superplastic alloy and a high-hardness member having high hardness are opposed to each other, and the mold body and the high-hardness member are placed in a furnace in a facing state, and a predetermined position is set. A method for manufacturing a mold, characterized in that the mold body and a high-hardness member are joined together by generating superplasticity by heating and pressurizing for a period of time.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP15641288A JPH026108A (en) | 1988-06-24 | 1988-06-24 | Mold and its manufacture |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP15641288A JPH026108A (en) | 1988-06-24 | 1988-06-24 | Mold and its manufacture |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH026108A true JPH026108A (en) | 1990-01-10 |
Family
ID=15627183
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP15641288A Pending JPH026108A (en) | 1988-06-24 | 1988-06-24 | Mold and its manufacture |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH026108A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2004175112A (en) * | 2002-11-13 | 2004-06-24 | Maxell Hi Tec Ltd | Molding die and its manufacturing method |
-
1988
- 1988-06-24 JP JP15641288A patent/JPH026108A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2004175112A (en) * | 2002-11-13 | 2004-06-24 | Maxell Hi Tec Ltd | Molding die and its manufacturing method |
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